Conventional Products—2412AT, 2424AT, and 2424AIT Direct 4-Wire Smoke Detectors 9
Figure 4: Additional Wiring Needed for the Isolated Thermal Unit
of the 2424AIT Detector
Note: Thermal units may be wired to a separate IDC.
!
WARNING:
Shock hazard. Disable the power IDCs before
installing detectors.
1.
Wire each detector following installation guidelines.
2.
Line up arrows on the detector with arrows on the mounting bracket.
3.
Turn the detector clockwise until it clicks into place.
4.
Enable the tamper-proof feature. For instructions see the
Tamper-Proof Feature section of this technical bulletin.
5.
After all detectors have been installed, apply power to the control unit.
6.
Test the detector as described in the Testing section of this
technical bulletin.
7.
Reset the detector at the system control panel.
8.
Notify the proper authorities that the system is in operation.
Dust covers are an effective way to limit the entry of dust into smoke
detector sensing chambers. However, they may not completely prevent
airborne dust particles from entering the detector. Therefore, remove
detectors before beginning construction or other dust producing activity.
Be sure to remove dust covers from any sensors that were left in place
during construction as part of returning the system to service.
s m k w ire 6
4
S uggested
EO L
R esis tor
5
UL Listed
T w o or
Fou r
W ire
P an el
Initiating
Loop
(ID C )
4
5
Installation
Limiting
Exposure to Dust
